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DBJ-003
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DABUND
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Copper
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1M - 50M
Material
Color
Keywords
Application
3/8 x 7/8 AC Line Set for Mini Split & HVAC Systems
Our 3/8 x 7/8 AC line set is designed for residential and commercial HVAC applications, offering reliable refrigerant flow, superior insulation performance, and long-lasting durability. Manufactured with high-purity copper tubing and premium insulation, this HVAC line set is ideal for mini split air conditioners, heat pumps, and refrigeration systems.
The insulated copper tubing helps reduce energy loss, improve cooling efficiency, and protect against moisture and UV exposure. Suitable for both indoor and outdoor installations.
Premium 99.9% Pure Copper Tubing
This 3/8 x 7/8 HVAC line set is manufactured using ASTM B280 standard copper tubing with high thermal conductivity and excellent pressure resistance.
Features:
99.9% pure copper
Strong corrosion resistance
Smooth inner wall for efficient refrigerant flow
High-pressure performance
Leak-resistant construction
The durable copper material ensures long service life and stable HVAC system operation in various climates.
High-Density Insulation for Maximum Energy Efficiency
The insulated AC line set includes thick closed-cell foam insulation designed to minimize heat loss and condensation.
Benefits:
UV-resistant insulation
Waterproof outer layer
Reduces energy consumption
Prevents sweating and moisture buildup
Suitable for extreme temperatures
This makes the line set ideal for mini split air conditioners, heat pumps, VRF systems, and refrigeration applications.
Compatible with Most Mini Split & HVAC Brands
The 3/8 x 7/8 line set is compatible with many leading HVAC brands, including:
Daikin
Mitsubishi Electric
LG
Panasonic
Gree
Midea
Carrier
Pioneer
Fujitsu
It is widely used in residential HVAC installations, commercial cooling projects, and refrigeration systems.
Easy Installation & Flexible Design
Designed for HVAC contractors and installers, this insulated copper line set offers excellent flexibility and easy bending during installation.
Installation Advantages:
Pre-insulated copper tubing
Flared or straight-end options
Flexible and kink-resistant
Saves installation time
Supports custom lengths
The lightweight and durable construction helps improve installation efficiency on job sites.
99.9% Pure Copper
Black Rubber Insulated Pipe
Plastic Cap
Features of pipe insulation tubing:
● Pipe Insulation, Material Black Rubber, Temp Range -40 Degrees to 120 Degrees.
● The pipe insulation has a better function of moisture condensation. Insulation material is both the insulation layer and moisture-proof layer.
● There is no need to drop the water vapor permeation protective layer so that it has a better moisture condensation function.
OEM & Custom HVAC Line Set Solutions
As a professional HVAC line set manufacturer, DABUND provides OEM and ODM services for global distributors, wholesalers, and HVAC brands.
Custom Options:
Customized lengths
Different insulation thicknesses
Private label packaging
Copper tube sizing options
Logo printing support
Bulk orders and customized HVAC installation kits are available for international markets.
Applications of 3/8 x 7/8 HVAC Line Sets
This insulated copper pipe is suitable for:
Mini split air conditioners
Heat pump systems
VRF/VRV systems
Commercial HVAC systems
Refrigeration equipment
Residential air conditioning projects
The line set delivers efficient refrigerant transmission and reliable long-term performance.
Mini Split AC Line Set
Size | Length | Insulation Black Rubber | Flame Resistant |
1/4+3/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4+1/2 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4+5/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+5/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+3/4 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/2+3/4 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+7/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4 + 3/8 AC line set used for 0.75TON - 1.0TON mini split air conditioner.
1/4 + 1/2 Mini split line set used for 1.5TON - 2.0TON mini split air conditioning.
1/4 + 5/8 Copper line set used for 2.0TON - 2.5TON split air conditioner system.
3/8 + 5/8 Insulated copper tube apply for 3.0TON - 4.0TON ductless mini split air conditioner.
3/8 + 3/4 Insulated copper tubing used for 4.5TON - 6.0TON split air conditioner installation.
3/8 + 7/8 Insulated copper piping apply for 6.0TON - 8.0TON ductless mini split air conditioner.
Air conditioning copper line sets 1/4 + 3/8 used for 0.75P and 1P split air conditioning.
Copper pipe kit 1/4 + 1/2 commonly used for 1.5P and 2P mini split air conditioners.
1/4 + 5/8 Insulated copper line set used for 2P and 2.5air conditioner system.
3/8 + 5/8 Mini-split copper line set apply for 3P and 4P ductless mini split air conditioner.
3/8 + 3/4 Copper pipe kit used for 4.5P and 6P split aircon installation.
3/8 + 7/8 Insulated copper piping apply for 6P - 8p TON ductless mini split air conditioner.
1/4 + 3/8 Mini split line set used for 9000BTU and 12000 BTU split air conditioner.
All copper line set 1/4 + 1/2 commonly used for 12000 BTU and 18000 BTU mini split air conditioners.
1/4 + 5/8 Insulated copper line set used for 24000 BTU and 30000 BTU air conditioner system.
3/8 + 5/8 Mini-split line set apply for 36000 BTU and 48000 ductless air conditioner.
3/8 + 3/4 AC line set used for 54000 BTU and 72000 split air conditioner installation.
3/8 + 7/8 Insulated copper pipe apply for 72000 BTU - 96000 BTU ductless mini split air conditioner.
Aircon copper line set 1/4 + 3/8 used for 9K and 12K split air conditioner.
High quality copper line set 1/4 + 1/2 commonly used for 12K and 18K mini split air conditioners.
1/4 + 5/8 Insulated copper line set used for 24K and 30K air conditioner system.
3/8 + 5/8 Mini-split line set apply for 36K and 48K ductless air conditioner.
3/8 + 3/4 AC line set used for 54K and 72K split air conditioner installation.
3/8 + 7/8 Insulated copper pipe apply for 72K - 96K ductless mini split air conditioner.
Why Choose 3/8" x 7/8" AC Line Set from DABUND PIPE
We are manufacturer of AC Line Set since 2008 years, have good experience of producing and exporting. We have cooperated 9 years forwarder, can guarantee the shipment. Every week we load at least 6-8 40HQ to different countries. Choose Dabund You will win the business.
Individual pre-insulated rolls to perfectly fit every ductless mini-splits, VRF, heat pumps and unitary systems installation.
Quality products with competitive pricing
Peace of mind with professional services
DABUND FACTORY
We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts
SGS Certificate
Mini Split Line Set is made of Polypropylene or Black Rubber with UV Resistant, meets ASTM E 84, UL94, ASTM D1056 and ASTM G 21
Exhibition
We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.
FAQ
1.What is a 3/8 x 7/8 AC line set used for?
A 3/8 x 7/8 AC line set is commonly used to connect mini split air conditioners, heat pumps, and HVAC systems. It transports refrigerant between indoor and outdoor units while maintaining efficient cooling performance.
2.Is the 3/8 x 7/8 line set compatible with mini split systems?
Yes. This HVAC line set is compatible with many mini split brands including Daikin, Mitsubishi Electric, LG, Gree, Pioneer, Fujitsu, and Carrier systems.
3.What material is used in this HVAC line set?
The line set is manufactured from 99.9% pure copper tubing that meets ASTM B280 standards for HVAC and refrigeration applications.
4.Why is insulation important for AC line sets?
Insulation helps reduce energy loss, prevent condensation, improve cooling efficiency, and protect copper tubing from UV exposure and moisture damage.
5.Can the HVAC line set be customized?
Yes. DABUND provides OEM and ODM customization services including custom lengths, insulation thickness, packaging design, logo printing, and private labeling.
6.Is the copper tubing corrosion resistant?
Yes. The copper tubing offers excellent corrosion resistance and long-term durability for both indoor and outdoor HVAC installations.
7.What HVAC systems use 3/8 x 7/8 insulated copper tubing?
This insulated copper tubing is widely used in:
Mini split systems
Heat pumps
VRF/VRV systems
Commercial refrigeration
Residential HVAC systems
8.Does the line set support high-pressure refrigerants?
Yes. The copper tubing is designed for high-pressure HVAC refrigerants and provides stable refrigerant flow with reliable leak resistance.
9.Can this AC line set be installed outdoors?
Yes. The UV-resistant insulation and waterproof outer layer make it suitable for outdoor HVAC applications and harsh weather conditions.
10.Why choose DABUND HVAC line sets?
DABUND offers:
Professional HVAC manufacturing experience
ASTM B280 compliant copper tubing
Strict quality control
OEM customization
Fast global shipping
Competitive factory pricing
DABUND products are exported worldwide for residential and commercial HVAC projects.
